Ice cream freezer



May 31, 193 J. H. GARDNER ET AL ICE CREAM FREEZER Filed Dec. 14. 1928 2 Sheetss3heet l INVENTORS r/in /Z. arcfiz er (fiarZas/l LS'awtedZe ATTORNEYS May 31, 1932- J. H. GA\RDNE)R ET AL ICE CREAM FREEZER Filed Dec. 14, 1928 2 Sheets-Sheet 2 INVENTORS 1JZ%7?/L GarcZrr er ATTO RN EY-S' Patented May 31, 1932 iairn T FFICIEVI} Joann. GARDNER AND eH RnEsA sAwTELE for DETROIT, MICHIGAN, ASSIGNORS, BY DIRECT AND MESNE' ASSIGNMENTS, To, e RnnER FREEZER CORPORATION, or

LANCASTEB, onro,

' IoE CREAM FREEZER Application filed December 14;";1928. Serial No. 325,996.

This inventionrelates to ice cream freezers,

and particularly to freezers comprising a rotative drum, one face of which is'refriger ated and another face of which 1s in contact with the mixture to be frozen, said mixture forming, through rotation of the drum, a more or less thin layer of ice cream upon the last mentioned face. adapted to be removed by a scraper or other suitable'means. 1

An object of the invention is to adapt a receiver for the ice cream scrapings to be also utilized as a channel forfdelivering an ice-cream-forming liquid into the casing of the freezer. I fl Another object isto establish' an improved mountingin such casing of said receiver so as-to facilitate its removal and replacement. Afurther objectis to provide ascraper for removing a layer of ice cream from the surface of a revolving drum and to adapt said scraper fora further use in packing the V scrapings in a suitable receiver. 1 i

Still 'another object 'is to provide a 'dru m for receiving a suitable freezingmixture and to provide in an improved manner for journaling said drum for quick removal from'and replacement in the casing of a'freezer.

' A still further objectisto' provide in one end -of such a drum an- -0pening'for :introducing a freezing mixture into the drum and to provide an improved mean's for quickly establishing a closure for said opening in sealing engagementwith the-drum. A

It is also an object of the invention to provide' in the casing of a freezer of the aforesaid character a window permitting a} visual inspection of the scrapings receiver so that it may be:readil y ascertained when 'said receiver is full. x I I These and various other objects the invention attains by the construction hereinafter described and illustrated in the accompanying drawingspwhereinz i Figure 1 is a view in longitudinal vertical section of the improved freezer.

tialsection of the journal for the front end Figure 4 is a top plan view of the front end portionof the drum.

Figure 5 isia side view of said end of the drum. 7 i

a Figure 6 is a fragmentary perspective view of a bracket interiorly carried by the lower member of the casing for ournaling an end of the drum.

Figure 7 is a fragmentary elevation in parof the drum.

- Figure 8 is a similar view of the rear journal. of the drum. I j 1 Briefly referring firstto the primary ele-' ments of the improved freezer, the reference characters 1 and 2 designate. upper and lowor members of a casing, theformer providing a cover for the latter, and the latter being adapted to receive in its lower portion a liquid ice cream mixture. In said casing is journaleda drum 3, adapted tov receive a freezing mixture such as ice and salt, the axis of said drumbeing preferably in the meeting plane ofthe upper and lower casing members the lower portion of said drum be ing in'us'e immersed in said ice cream mixture. A handle 4, or' other suitable drive element for the drumfls carried thereby in an exterior relationlto the casing. There is further arranged within the casing and preferably upon the upper member thereof, a

gage. the exteriorfaceof the drum for substantially its entire length to remove a layer ofice cream from said face. Finally the casingrcontains T a receiver 6 mounted in such proximity to the drum and scraperas to receive the scrapings and preferably also in such a relation to'the scraper that the latter pack the contents of said 'ing. a journalpin 8 integrally projecting from abracket' 9 which is interiorly at tached tothemember 2;of the casing at the upperedge of said" memberl' 'The'other exscraperblade .5, normally positioned to entremity' of thedrum is, formed centrally with an openingIlO, providing for the intro- 1 l duction into and'removal from the drum of a freezing mixture. Marginally of said ning, a collar 11 projects outwardly from tli drum, and within said collar an annular seat 12 for a closure 13 is provided. A pair of lugs 14 radially projecting from said closure? at opposite, points thereof, are adapted toifit into anpair of recesses 15in said collar to assure disposal of the closure in. either of two positions. Centrally pivoted upon the closure is a latchbar 1:6 which hasitse'n'ds hooked as-indicated' at 17 and projecting stifficiently beyond said closure to engage an annular rib 18 formed as a radial projection upon the collar 11. .To..allow ,the hooked 15 ends of said latch bar to engage said iii) the collie 11 is formedrwith" a pain. of :dimmctricall opposed notches 191thu0ugh iwhie'lrzthe 17:may.pass as. the closure linisiinserted in said collar. \Vhen the closure itesubatantiallyseated,"thinker/161 mayober-rotated upon its central pivot-toeugageritheahooks thereofiwvith said rib and; secure thanlrmu'e in place. It is preferred to cannthe iaeezof nib L8 adijaeentnto thewdnumaB iinieachidirootioddrom the notches 19--soc.that:-regardless of the direction in which thenlatehehanis -med from its initial position: ifiregmration with said notches, the camifaeesi as said nib Willtond todrawthe closure firmly. to its so seat. 'rProferablywa gasket :20 is. interposed between the closure and; itsseat. tomsanre a mum-perfect seal. I

rlt-isnpreferredi to mount the .crankhandle 4 mi'gidly and centrally =.uponthe:olosn rea13 and topivotthe latchzbarnlfiiupm aaidseamnk handle. Also it-isipreferred' to form=.the.inale! m aupporting portion oi sa'niscrawlmhanfile with-1am annular; shoulder. 21': iferzengag- 4o (22. jointly 7 formed 1 in tithe the bottonr ofthe'casing so t'hatithe-tpm'tion of the [mixture to be fmzen, which :nnderlies the :deuln, "will have .;only a. slight idepth, adapt'mg it; to freeze: :quiekly. :Thef bottom ofllilie easing iscurved upwardlyat one 'side oi theid'nnm tomerge into one'end oi the-casing member 1 as indicated at 23, and-prefereblymheclearanceofthe -'Wall"28 from the drum Q is progressively and gradually inw creased zas saidq-wall, extendsito 'its upper Within the casing at'the opposite side of the drum is disposed the scrapingibla deb, the same being preferably pivoted upon .the

M6 .member las indicated at 25, and resting of substantially a trough shape, extending parallelito the drum: axis and adjacentto the drum periphery. Said wreceiven-isvpreferably open at one end and closed at its other, and is refab ly supported only at its front end an entirelfypponthe'frontwall'ofthc casing. Thus 'arropennrg26 conforming-to'said receiver is formed jointly in the front wallsof themem- "'laersd'afn'l 2, into which opening said receiverasuggly fits. .To. maintain the horizontal position in use'of said receiver and restrain itnonmally from inward-or outward sliding, (an-1 annular rib/.2T projects outwardly from the receiver-.40 "seat .against the front. 'face oithecasinggandone or more lugs 28, project downwardly frem i-said .receiveruin such a spaeedfrelation to said ribas .to; be interiorly .engagaablemiththe avall. vThe tendencyvofithe receiver to: tiltabout its: supportiriig front end .isconnteracted by, the bearing .a oededrbymhelugs. 28 against ithe-interior of the casingandthatof-therib 27 exteriorly upon. thacasing. Thedescribed arrangement is suchfthatbysli htly; littingithe receiver by means of a handle bar29, exteriorly car- .riedlbyrits end; face, -the lugs.28.may. be raised .cleanoithetlower. margin of. the.:opening.26 permitting the receiver to be .then freely withdrawn firomthecasing. ".When partially sotwithdrawn, .the: receiver may. .be inclined, assis indicated .in dashlines in'Figure 3, ion-nip .a. channelihrough wwliichuan icecreamorming-liquid may be .readily introxluced .inho: thebottom; portion. of the raising Without mmovaLof the cover member. 1.

. IFonhoIdingtheuppeiuand .lowen members of the casing normallyengaged, it is preferi'ed to attacltapair of spring catches 30 interiorly tothe exids oilthe memberlhsaid catches projectiugl'downwardly. to interiorly'overlap the eridsoithdmembenZexid apertured to eggage, projections 31 upon'theendwalls of amber :2. Push pins 32 are carried by said spring. catches and project through openformed in the meeting edges. of. the members .1 flandltoflpermit. said. catches .to :be spnuugl back to. release theml'fromsaid pro- ;ec'tions.

. Iloperniittheoperator. to; readily :ascertain whether or not the accumulation .of. ice cream inthe receiver. is sufficient to .warnant the. removalthereof, it. is preferred. to pro- Videa .windowofpeningabove: said receiver in the member 1 o the casingand to fit in. said opening a tnaueparmit closure 33, of glass or other suitable material.

. In; the operationof the described a pliance a sufioientguantity oithe'ice-creain orming liquid is. introducedinto' .the casing member 1 to fullyi-mmersethe', lower portion. o'fisaid casing, an'd' from' time to' time inlthe operation of the machinethis liquid may be replenished as becomes necessary. In introducing said liquidthe receiver 6 will preferably be partially withdrawn from the casing as shown in Figure 3, being tilted in such position as said figure indicates, the liquid then being poured into the member 1 through said receiven The drum 3 is initially substantially filled with a suitable freezing mixture such as broken ice and salt. The operator now gradually rotatesthe drum 3 in the direction of the arrow in Figure 1, and the ice-creamforming liquid will soon become so chilled as to deposit a thin layer of ice cream upon the outer face of said drum. The formation of this layer will primarily occur upon the bottom portion of the drum, since the portion of the liquid contacting with the drum bottom is relativelythin and will consequently be more completelyand rapidly chilled by the drum than other portions of the liquid.

This progressively formed frozen layer will be carried around by rotation of the drum until it encounters the scraperblade 5, being removed by the latter and discharged into the receiver 6. Thus as the drum is rotated the scrapings of ice cream will continuously accumulate in the receiver 6, and from time to time may be packed down by the operator by use of the scraper member 5 as is indicated in dash lines in Figure 1. To permit manipulation of the blade 5 so that it may serve both as a'scraper and apacker a handle 34 is secured to the rear journal member of said blade, exteriorly of the casing. Thereceiver 6 is removed when filled, and its contents dis charged into some suitable receptacle and is then replaced for another filling.

The production of ice cream by this improved freezer is accomplished rapidly and with very slight manual exertion, it being possible for a child to operate the freezer without difficulty. Apart from the bracket 9 and the'blade 5 there are no interior projections upon'the casing 1,2 so-that the latter may be easily and thoroughly cleaned.

Also the described provision for sealing the filling opening of the drum permits the closure for said opening to-be quickly sealed in place as to positively assure against any contamination of the ice cream by the contents What'we claim is: 7;

1. In an ice cream freezer, the combination -with avvessel adapted to receive an icescreamforming liquid, of a rotatable member having alower port-ion immersed in said liquid, a scraper blade engaging theupper portion 'of said member for removing an adhering portion of the frozen liquid, a receiver for the scrapings removed by said'blade, said blade beingmovable to pack said scrapingsin said receiver. a 1

2. In a freezer for ice cream and the like the combination with a rotatable drum, of means 'for refrigerating one face of said drum, means for forming a frozen layerof liquid upon an opposite face ofsaiddrum, means for rotating the drum, a pivotal blade extending; parallel to the axis of the drum and engaging the last-named face thereof for scraping off said layer, and a receiver for the scrapings removed by said blade, said blade portion insaid liquid, and further adapted V to be interiorly refrigerated, means for rotating said drum, a blade exteriorly peripherally bearing upon said drum to scrape a frozen layer of said liquid therefrom, and a receiver for the scrapings removed by said blade, normally supported substantially horizontally below said blade, and adaptedwhen partiallywithdrawn from thecasingto as- I sume an inclined position. ,l 7 f. A freezer for ice cream and the like,

com risin a casin a drum rotatable in said casing, adapted to be interiorly refrigerated, a blade exteriorly peripherally: ,engageable with'said drum for removing a layer of frozen liquid therefronnand a receiver. normally supported withinthe casing in a position to receivethe scrapings removed by said blade and; adapted when partially withdrawn from the casing to receive in its withdrawn portion, a mixture to be frozen, and to discharge the same into the casing.

j 5 A, freezer for ice cream and the like, comprising a-casing adapted to receive a liq uid to be frozen, aniember rotatable in said casing adapted to be interiorly refrigerated, I

means for rotating saidmember, a scraper blade exteriorly engagedfwith said memberifor removing a frozen layer of said liquid therefrom, and a receiver for the scrap- 'in s removed by said blade fittin intoan opening in a wall of said casing and having a closed end forming a closure for said opening, the other end of said receiver being open.

6. In a freezer for ice cream and the like, the combination with a casing adapted to receive a liquid to be frozen and a drum rotatable in said casing adapted to be refrigerated,

llmomma of means for rotating S8ldfdl'llm,' a scraper blade ekmriorly engagingsaid drum 'for realising a cfrozenflayeri of said liquid therefmumganda receiver fitting in an=opening in a Mall of the casing and projecting into the casingor receiving the scrapings removed by-said blade, said receiver "being removable through-said opening.

7. freezer for ice cream and the like, a) comprising a.casing,a-drumrotatablerinsaid casing, adapted to be interiorly refrigerated, said oasing serving to receive a liquid adapt- BdIO fOI'IIT ZL fIOZQII layer upon said drum through rotationofthe drum, a receiver for a the *material comprising said "layer, and

means 'for removing said ma-terial from the V drum and discharging it into said "receiver, said receiver being adapted toassume a tilted: posibionrof palrtial withdrawal from the easing, adapting it for discharging'into the maingthe liquid to be frozen upon said-drum. n a; fneezrer'for ice cream and the like, a casing, a' member journaled in said casing, asertperbeairing on said member, and a reseiner mounted in said casing substantially belowsaidscraper to receive scrapings remm'd from saidjournaled member, said having an opening in-one wall and'said receiver' being mounted in said opening and a completely supported by said wall.

- Brin -a device of the character described, a drum'zlosed' atone end'and having an opening at its other end, a removable closure for-the open'end of said drum,- ail-trunnion fon j'ournaling saiddrum rigidly projecting imm-snid'olosure, ahandle for rotating the drum operatively engaged With said trunnion, and a lat'eh bar rotative upon saidtrunninn betweensaid closure and handle, and coaioting with said drum to 'clampthe closure n'pon'the drum.

:10. J11 adevice'of the charaeterdescribed,

aifirum having an opening at one end therecxrcumferentialmib, having a ea-m face opposing :the drum, a olosure for saidopening removnbly 'engageable witht-he drum, a trunnion oentnzilly carried bysaid closure for ournaling the drum, and a'latchbar jourmled on said trunnion, extending diametrically of the'drum, the ends of said latchbar bemghn'oked to engage the cam face of said ribpwhereby" rotation of 'saidlatch bar is nlhvpted {to clamp said closure in its closed position.

in testimony whereof we sign this specifieatmn.

"JOHN GARDNER. no G'HA RLES A. SAWTELLE.

of ond formed" at said end Withan exterior 

